"He has been for like the past ten minutes. You either didn't notice him, or didn't want to answer his question. Now you're obligated to.
Your move (Insert teacher name here)"
I've done this quite a few times
< MFW the teacher gets mad at me (Ignore the text in that)

that moment when your hand is raised for a really long time and so you switch, but then that gets tired, so you switch back, then that arm gets tired again, so you just hold it with your other hand while its wrapped around your head.